Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion

Abstract Background Ectopic gas in the graft is occasionally encountered upon follow-up computed tomography (CT) after anterior cervical corpectomy and fusion (ACCF). However, most cases lack inflammatory responses and manifestations of infection. Although the clinical significance of ectopic gas in...

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Autores principales:	Satoshi Nozawa, Hiroki Kato, Masaya Kawaguchi, Asae Nozawa, Kazunari Yamada, Chizuo Iwai, Kazunari Fushimi, Kei Miyamoto, Hideo Hosoe, Katsuji Shimizu, Masayuki Matsuo, Haruhiko Akiyama
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Ectopic gas Anterior cervical corpectomy and fusion Pseudoarthrosis Diseases of the musculoskeletal system RC925-935
Acceso en línea:	https://doaj.org/article/1ee6d21fb0ed4fff8a8b0eaa9254f6c2
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spelling	oai:doaj.org-article:1ee6d21fb0ed4fff8a8b0eaa9254f6c22021-12-05T12:18:22ZEctopic gas in the fibular graft after anterior cervical corpectomy and fusion10.1186/s12891-021-04874-61471-2474https://doaj.org/article/1ee6d21fb0ed4fff8a8b0eaa9254f6c22021-11-01T00:00:00Zhttps://doi.org/10.1186/s12891-021-04874-6https://doaj.org/toc/1471-2474Abstract Background Ectopic gas in the graft is occasionally encountered upon follow-up computed tomography (CT) after anterior cervical corpectomy and fusion (ACCF). However, most cases lack inflammatory responses and manifestations of infection. Although the clinical significance of ectopic gas in the graft has not yet been established, to the best of our knowledge, no previous studies have described ectopic gas in the graft after ACCF. This study evaluated ectopic gas in the fibular graft upon follow-up CT after ACCF. Methods We reviewed 112 patients who underwent ACCF and follow-up CT, with a minimum follow-up period of 3 years. CT images were retrospectively reviewed to confirm the presence of ectopic gas in the graft and bone fusion. Bone fusion was defined as follows: mobility less than 2 mm between spinous processes on the flection-extension radiograph or a bone bridge on CT images. Results Of the 112 patients, 30 (27%) patients had ectopic gas in the fibular grafts. Among them, ectopic gas was initially observed 3 months after surgery (early onset) in 23 (77%) patients and 6 months after surgery (late-onset) in the remaining seven (23%) patients. Upon the latest follow-up CT, ectopic gas more frequently remained in late-onset (4/7, 57%) rather than in early-onset (3/23, 13%) cases (p = 0.033). Bone fusion was not observed when CT images exhibited ectopic gas in the graft, whereas ectopic gas was not observed when CT images exhibited bone fusion. Conclusion Ectopic gas in the fibular graft was observed at both early and late-onset after ACCF; late-onset gas remained significantly. The remaining gas was strongly associated with pseudoarthrosis; therefore, pseudoarthrosis should be considered when ectopic gas in the graft is observed on CT images.Satoshi NozawaHiroki KatoMasaya KawaguchiAsae NozawaKazunari YamadaChizuo IwaiKazunari FushimiKei MiyamotoHideo HosoeKatsuji ShimizuMasayuki MatsuoHaruhiko AkiyamaBMCarticleEctopic gasAnterior cervical corpectomy and fusionPseudoarthrosisDiseases of the musculoskeletal systemRC925-935ENBMC Musculoskeletal Disorders, Vol 22, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ectopic gas Anterior cervical corpectomy and fusion Pseudoarthrosis Diseases of the musculoskeletal system RC925-935
spellingShingle	Ectopic gas Anterior cervical corpectomy and fusion Pseudoarthrosis Diseases of the musculoskeletal system RC925-935 Satoshi Nozawa Hiroki Kato Masaya Kawaguchi Asae Nozawa Kazunari Yamada Chizuo Iwai Kazunari Fushimi Kei Miyamoto Hideo Hosoe Katsuji Shimizu Masayuki Matsuo Haruhiko Akiyama Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
description	Abstract Background Ectopic gas in the graft is occasionally encountered upon follow-up computed tomography (CT) after anterior cervical corpectomy and fusion (ACCF). However, most cases lack inflammatory responses and manifestations of infection. Although the clinical significance of ectopic gas in the graft has not yet been established, to the best of our knowledge, no previous studies have described ectopic gas in the graft after ACCF. This study evaluated ectopic gas in the fibular graft upon follow-up CT after ACCF. Methods We reviewed 112 patients who underwent ACCF and follow-up CT, with a minimum follow-up period of 3 years. CT images were retrospectively reviewed to confirm the presence of ectopic gas in the graft and bone fusion. Bone fusion was defined as follows: mobility less than 2 mm between spinous processes on the flection-extension radiograph or a bone bridge on CT images. Results Of the 112 patients, 30 (27%) patients had ectopic gas in the fibular grafts. Among them, ectopic gas was initially observed 3 months after surgery (early onset) in 23 (77%) patients and 6 months after surgery (late-onset) in the remaining seven (23%) patients. Upon the latest follow-up CT, ectopic gas more frequently remained in late-onset (4/7, 57%) rather than in early-onset (3/23, 13%) cases (p = 0.033). Bone fusion was not observed when CT images exhibited ectopic gas in the graft, whereas ectopic gas was not observed when CT images exhibited bone fusion. Conclusion Ectopic gas in the fibular graft was observed at both early and late-onset after ACCF; late-onset gas remained significantly. The remaining gas was strongly associated with pseudoarthrosis; therefore, pseudoarthrosis should be considered when ectopic gas in the graft is observed on CT images.
format	article
author	Satoshi Nozawa Hiroki Kato Masaya Kawaguchi Asae Nozawa Kazunari Yamada Chizuo Iwai Kazunari Fushimi Kei Miyamoto Hideo Hosoe Katsuji Shimizu Masayuki Matsuo Haruhiko Akiyama
author_facet	Satoshi Nozawa Hiroki Kato Masaya Kawaguchi Asae Nozawa Kazunari Yamada Chizuo Iwai Kazunari Fushimi Kei Miyamoto Hideo Hosoe Katsuji Shimizu Masayuki Matsuo Haruhiko Akiyama
author_sort	Satoshi Nozawa
title	Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
title_short	Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
title_full	Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
title_fullStr	Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
title_full_unstemmed	Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
title_sort	ectopic gas in the fibular graft after anterior cervical corpectomy and fusion
publisher	BMC
publishDate	2021
url	https://doaj.org/article/1ee6d21fb0ed4fff8a8b0eaa9254f6c2
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Ectopic gas in the fibular graft after anterior cervical corpectomy and fusion

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